Electric tooth brush



FIG. 1 is a top plan view of an electric tooth brush showing my new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a bottom plan view thereof. 

CLAIM The ornamental design for an electric tooth brush, as shown and described. 